After a long research, here are my findings:
Low priced Sony and Samsung LED are actually chinees LEDs , what they do is, afix a Sony or Samsung monogram on it, if u can goto Shenzhen china, u can get a LED tv of your own name, just like haier is doing,
But one thing I have noticed by comparing original and a Chinese LED , THERE WAS NO DIFFERENCE OF PICTURE QUALITY AT ALL.
3D might have a difference coz I haven't compared it yet.
Will goto China next month to buy two LEDs.
46" 3D smart LED, JUST FOR 320$
Which cost above 120k for original in Pak .